Greece's overall debt load of €323 is not sustainable. What cannot be paid back, won't.

The current payback schedule on debt owed to the ECB and IMF implies yet another "bailout" to the tune of €53.8 Billion.

It is amusing to hear talk of a third bailout given that Greek Prime Minister Alexis Tsipras wants to put an end to the second, and certainly will not accept a third. Yet, here we go again.

How Much Would a Third Bailout Cost?  

The Financial Times goes over the math in How Much Would a Third Greek Bailout Cost? 

 One of the unmentioned problems looming over the current Greece standoff is the fact that Athens will need a third bailout, regardless of what happens in a week's worth of Brussels meetings that start on Wednesday. Eurozone officials say that both Yanis Varoufakis, the new Greek finance minister, and his boss, Alexis Tsipras, have acknowledged that in private meetings.